Felt for papermaking machines



Feb.` 6, 1951 s. J. GEDDINGS FELT FOR PAPERMAKING MACHINES Filed May 25, 1949 INVENTOR.

Ti. /4 /f/ /7 le /4 /5 SAINT JUL'IAN GEDDINGS m2- f H' ATTORNEY Patented Feb. 6, 1951 UNITED unai l I Claim.

This inventionrelates tofelt for use upon paper making machines. Y y

Important objects of the invention are to provide ua felt of the above mentioned character, which is iirm, strongand formed highly porous without skipping reed dents; which when wetted and dried will have a reduced shrinkage so that it Will not narrow down beyond certain limits; which has a limited',longitudinal` stretch; which hasv one face formed completely of heat resisting material and its opposite face substantially completely of highly absorbent material; and which has an increased absorbing and drying action so that it may be driVenat-a higher speed in paper making machines'for efiecting ari-increased output of the treated paper;

In theV accompanying drawings, forming a part of this application, andin which likey numerals are employed! to designate likeparts throughout the same, a

Figure i. is a diagrammatic'view in perspective showing my improved fabric with'theyarns wideiy separated for the purpose of illustration.

Figure 2 is afvertical longitudinal section taken on line Z-2 ofFigure l; the yarnbeing widely spaced for the purpose'of illustration,

Figure 3 isa longitudinalsection throughthe fabric, the yarn being somewhatspaced for the purpose of illustration,

Figure 4 is a transverse vertical section taken on iineliL-o'f Figure 2, parts in elevation,

Figure 5 is a similar View taken on line 5-5 of Figure 2, parts in"elevatim""and,`

Figure-diseplan-View of the asbestosface `of the fabric, the yarn being considerably opened for the purpose -of illustration. Y

1n thedr'awingsithe numeral` IIJ'` designates groups of filling picks, extending throughouti the entire Width and length" of the fabric.'` Each group cox'ipri'sesan upper' pick" I"I, aninterniedi'atepick I2; arida'lower pi'cllv I3`. Thse filling picks are formed.: in the conventional manner from a continuous filling made of heat resisting materia-l; such as asbestos. The lling consti-A tutes thebinden The numeral I4 designates warps arranged in a set which extends throughout substantially the entire Width and length of the fabric. The Warps Ill are formed of heat resisting material, such as asbestos. The numeral I5 designates Warps arranged in a companion set, which extends throughout substantially the entire Width and length of the fabric. The Warps I5 are formed of heat resisting material, such as asbestos. The Warps I5 alternate with respect to the warps I4 and areV arranged next to theAA same. The; warps I`4 are-passed over the upper filling pick II of the iirst` group to the left,Y Figures 1v and 2, and passed' under the upper llingipick II of the next group' te, and thisA passing arrangement continues throughout the length ofthe fabric. The Warps" I5" are passed under the intermediate iillingpick' I'2A of' th first group I0 tothe 1eft, Fig. ures 1 and 2, and then passed over the upper fillingpick II' of the next group I'Ii', and'this alternate passing` arrangement continues throughout the entire length of the fabric: It is' thus seen thattlie vvarps I5;at alternate" lling groups I'I), pass from above'the'upper iiiling picks II down- Wardly' into thefabric and pass beneath the intermediate' lling picks I2 of the" remaining alternate gr'upsi I. '.The descending portions of the W'arpsf i5" produce the pores or openings in the upper face of the fabric' Since the Warps Iii and I5 andthellingpicks I'I are formed' of asbestos, the upper face of' the fabric or felt" is formed entirelyV` of asbestos, withtheY pores or openings therein.

The numeral Iudesigiatesstrong intermediate war'ps, arranged aser: These-strong Warps arefforined'fofflax or the like andmay be Woven tighterA under highiterisioni The' strong Warps Ilare pa'sse'do'verY theinterriiediate lling pick of tlie" r'st group I'l tdthe`1 left;'Figures 1' and 2, and beneath" th" iiite rniediate filling pick I2" of the; next' FillingA group` I0;` and this" passing arrangement dontiriuesthrouglut the `entire length diI the fabric'.` i y The' numeral" I1 designates 'Warps arranged' in a serene' fermes or readily* atsqrbenti material 'asi cotton."r The vapsf I are arranged'next to i thivvarpsll andi the Warns' I 1" are arranged next to-thewarps`-' I5. T hewarpsll are passed over the iiliiiig piclij I df'fthfiirstg'rupto the left, Figures: land 2; andfarpassed under' theiling pick-Iitlof the' next group 10'? fand"`this alternate passing arrangement"cdntinulsfthroughout the fel TheE riinn';rali I8 designates" W'ar'ps"v fdrmed of "radilyfabsbent naterlal such'fa's" cotton," and the Warps I8 are arrangei'iriais'etl' and thisfst is a companion for the set of Warps Il. The Warps I8 are passed beneath the lling pick I3` of the first group I0 to the left, Figures 1 and 2, and then passed above the intermediate nlling pick IZ of the next group I0, and this alternate passing arrangement continues throughout the fabric. It is thus seen that the warps I'l are passed above and below alternate filling picks I3, while the Warps I8 are passed below pairs of nlling picks I3 of alternate groups IU and passed over the filling picks I2 of the groups Ill `between such pairs. Portions of the warps I8 extending to the picks I2 form ends i8', and these warp portions extending into the felt, produce the openings or pores. The warp ends I8' in one group are disposed upon the same filling pick I2. The warp ends Iii in each group are disposed upon the same filling pick I3. The warp ends I1 in each group are disposed upon the same filling pick. The warp ends ila in each group are disposed upon the same lling pick I3. The warp ends l5 in each group are disposed upon the same filling pick II, and these warpends I5 produce a straight transverse group in alignment with the straight transverse group of the warp ends iii. The warp ends I5a in each group form a straight transverse group in alignment with the adjacent straight transverse group of warp ends Iii. The warp ends I4 are disposed above alternate pairs of lling picks I I and warp ends Illa are disposed beneath filling picks II between such pairs. Warp ends I6 are arranged above filling picks 4I2 in pairs and warp ends I6a beneath the filling picks I2 between the pairs.

' It is thus seen that the transverse straight groups of warp ends Iii', Ii, Ia and I9 are in alignment; and the transverse straight groups of warp ends I5', Ilia, I3', Ia and Ila are in alignment.

The warp ends lli and I5 pass to the upper face of the felt, and since the filling picks II are also formed of asbestos, the upper face of the fabric is therefore entirely formed of heat resisting material, such as asbestos.`

The warp ends I9 and Ila pass to the lower face of the felt, and since these warp ends are formed of cotton, such lower face is formed entirely of readily absorbent material, except for the lling picks I3. Y

In View of the foregoing disclosure, it will be seen that I have provided a felt having one face formed entirely of heat resisting material, such as asbestos, and its opposite face formed of highly absorbent material, such as cotton. These faces have openings or pores IEb produced by the warps I5 and l@ extending into the body of the felt and passed about the intermediate lling pick E2, and the warps IS which are spaced from such faces. The asbestos face is adapted to travel about steam heated drums in the paper making machine and such face will not be injured, while the paper being treated restsV upon the cotton face of the felt. The filling constitutes the binder and this lling is crimped. When the Vfelt is wetted and then dries Vthere will be little tendency for the felt to shrink transversely, as the shrinkage will be compensated for by the crimps in the filling, which crimps tend to straighten out.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claim.

lling picks forming an intermediate longitudinalY group of filling picks, a first set of heat resisting warps engaging over the next alternate lling picks of the rst longitudinal group and engaging beneath the remaining filling picks of the same longitudinal group, a second set of heat resisting warps arranged next to the warps in the rst set and passed over the next alternate filling picks of the rst outer longitudinal group, the last named filling picks having the first set of warps engaging beneath them, said'second set of warps engaging beneath the next alternate lling picks in the intermediate longitudinal group, the last named lling picks being in the same groups with the filling picks of the first outer longitudinal group having the first set of warps engaging over them, a third set of strong warps arranged next to the warps in the second set and engaging over the next alternate lling picks in the intermediate longitudinal group, the last named lling picks having the second set of warps engaging beneath them, the third set of warps engaging beneath the remaining filling picks in the intermediate longitudinal group, a fourth set of readily absorbent Warps arranged next tothe warps in the third set and engaging over the next alternate filling picks in the second outer longitudinal group, the last named filling picks being in the same groups with the filling picks of the intermediate longitudinal group having the second set of warps engaging beneath them, the fourth set of warps engaging beneath the remaining filling picks in the second outer longitudinal group, and a fifth set of readilyV absorbent warps engaging beneath the next alternate filling picks of the second outer longitudinal group, the last named filling picks having the fourth set of warps engaging over them, the fifth set of warps engaging over the next alternate filling picks of the intermediate longitudinal group, the last named iilling picks having the third set of warps engaging beneath them. Y

SAINT JULIAN GEDDINGS.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED sTATEs PATENTS Number 

